ISR4221/K9
ISR 4221 with 2 onboard GE, 2 NIM slots, 1 ISC slot, 8 GB Flash Memory default, 4 GB DRAM default
The Cisco ISR4221/K9 is an entry-level, fanless 75Mbps branch router with basic routing, modular interfaces, and desktop form factor.
ISR4221/K9 Overview
The Cisco ISR4221/K9 is an entry-level branch office router delivering up to 75Mbps performance. It allows small sites to deploy essential routing and security services in a fanless compact form factor.
The Cisco ISR4221/K9 provides fast Ethernet and gigabit network connections along with modular interface expandability. It runs the Cisco IOS XE modular software with basic feature set.
With the performance license, the router capacity can be increased from 35Mbps default to 75Mbps maximum. The Cisco ISR4221/K9 allows cost-effective secure connectivity for small branch deployments.
Quick Specifications
| Feature | Description |
|---|---|
| Routing Performance | Up to 75Mbps with performance license |
| WAN Ports | 1x Gigabit Ethernet (1 with SFP) |
| LAN Ports | 1x Gigabit Ethernet |
| Slots | 2 NIM slots |
| Memory | 4GB default and maximum DRAM, 8GB Flash |
| Power Supply | External AC power supply |
| Form Factor | Compact fanless desktop |
| Software | Modular Cisco IOS XE |
ISR4221/K9 Details and Highlights
- Essential Routing: Layer 3 routing and security services for small sites.
- Fast Ethernet/Gigabit: Routes up to 75Mbps with license, 35Mbps by default.
- Compact Form Factor: Fanless design for quiet desktop operations.
- Modular Expandability: Slots for network interface modules.
- Cost-optimized: Affordable platform for basic connectivity.
Comparison to Similar Models
| Feature | ISR 4221 | ISR4321/K9 | ISR4331/K9 |
|---|---|---|---|
| Performance | 75Mbps | 100Mbps | 300Mbps |
| Form Factor | Compact desktop | 1RU | 1RU |
| Power Supply | External AC | Integrated AC/DC | Integrated AC/DC/PoE |
| NIM Slots | 2 | 2 | 2 |
| SM Slots | 0 | 0 | 1 |
Full Specifications
| Feature | ISR 4221 Specifications |
|---|---|
| Routing Performance | Up to 75Mbps aggregate with license |
| Ports | 1x Gigabit Ethernet (1 with SFP), 1x Gigabit Ethernet |
| Slots | 2 NIM slots |
| Memory | 4GB default and max DRAM, 8GB Flash |
| Power Supply | External AC power adapter |
| Dimensions | 1.72 x 12.7 x 10 in (43.7 x 322.6 x 254 mm) |
| Weight | 7.1 lb (3.22 kg) |
| Software | Cisco IOS XE Software |
| Licensing | IP Base, Security, Performance |
Supported Modules and Accessories
| Module Type | Supported Options |
|---|---|
| NIMs | T1/E1, Serial, xDSL, Fast Ethernet |
| Accessories | SFPs, console cable, power supply |
ISR4221/K9 Licensing
The Cisco ISR4221/K9 uses Cisco IOS XE Software with licensing:
- IP Base included by default
- Performance license to increase the throughput
- Optional Security license
Installation and Deployment
- Compact desktop form factor
- External power supply
- Fanless design for quiet operation
- Cisco installation services available
Compliance and Safety
- UL 60950-1 safety certified
- EMC emissions compliance to Class A standards
- Meets NEBS shock and vibration requirements
Warranty and Support
- 90 day limited hardware warranty
- IOS software warranty with Cisco support contracts
- 24×7 technical support available through Cisco SMARTnet
ISR4221/K9 End of Life Policy
- Minimum 6 months’ notice for hardware end-of-life
- Minimum 12 months’ notice for software end-of-support
- More details at Cisco EOL Policy
Brand
Cisco Systems
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